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    <title>Document</title>
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<body>
    <div class="cal">
    <div class="k" id="k">0</div>
   <ul class="row">
       <li onclick="AC()" style="background-color: #dd4aeb;color: white;">AC</li>
       <li onclick="X2()" style="background-color: #ec52e5;color: white;">X<sup>2</sup></li>
       <li onclick="X3()" style="background-color: #cd2cf5;color: white;">X<sup>3</sup></li>
       <li onclick="san('/')" style="background-color: #ee2cd4;color: white;">÷</li>
   </ul>
   <ul class="row">
        <li onclick="san('7')">7</li>
        <li onclick="san('8')">8</li>
        <li onclick="san('9')">9</li>
        <li onclick="san('*')" style="background-color: #dd4aeb;color: white;">×</li>
    </ul>
    <ul class="row">
        <li onclick="san('4')">4</li>
        <li onclick="san('5')">5</li>
        <li onclick="san('6')">6</li>
        <li onclick="san('-')" style="background-color: #dd4aeb;color: white;">-</li>
    </ul>
    <ul class="row">
        <li onclick="san('1')">1</li>
        <li onclick="san('2')">2</li>
        <li onclick="san('3')">3</li>
        <li onclick="san('+')" style="background-color: #dd4aeb;color: white;">+</li>
    </ul>
    <ul class="row">
        <li onclick="san('0')">0</li>
        <li onclick="san('00')">00</li>
        <li onclick="san('.')">.</li>
        <li onclick="ab('=')" style="background-color: #dd4aeb;color: white;">=</li>
    </ul>

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